When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'd save your money until you would benefit from new injectors, or spend that money on other mods... The stock ones are supposed to be fine until you get 300HP+/
ford motorsports offers 24
but im asking if anybody knows how big you can go with the stock ecu?
I am having a hard time understanding your question. Your computer has calibrated your MAF for the injectors in your car. That being said, I guess the answer to your question would be, "whatever size is in there now".
The stock computer can basically handle any size you want to use. If you want 55#'s, sure, put them in, but your MAF will have to calibrated through the computer for the larger size.